The seller should have sent you a full refund if you opened a case for item not as described.
Contact eBay Customer Services, they have full access to both accounts , can see what happened and hopefully action the rest of the refund.
This is the easiest and quickest way to contact eBay Customer Services, for a Call Back option.
https://www.ebay.co.uk/help/eua?id=5275&mkevt=1&mkpid
Lines open between 8 a.m. to 10 p.m. on weekdays.
9 a.m. to 6 p.m. on weekends.
I recommend contacting CS very first thing in the morning, when the lines first open, as there's more chance of Dublin answering.
@robbie2525lav
